Hmf, after reading chapter 459 I came to conclusion that Junazard's words on
page 12 not only affect Miu, but also Kenichi. "To get person
reach their peak... You must destroy something precious to them." Junazard basically destroyed Miu which Kenichi knew and we do know that Miu is precious to him. Using this same logic could be a step for character development for Kenichi. I'm not saying Miu will die or something but this will definitely leave some after effects on her personality.